Specifications

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Chapter 13: Topology – Network Services
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Alcatel-Lucent Enterprise Communication Solutions
April 2014 Offer
3.3.5.3.2 VoWLAN topology and architecture examples
Campus – LAN – single communication server architecture
The Alcatel-Lucent VoWLAN solution can be deployed in a single site environment regardless of the
data network architecture. User roaming and handover are possible even if the data network is
segmented at Layer 2 or 3. Access Points, as OmniTouch 8118/8128 WLAN Handsets, can belong to
different IP sub-networks.
The Alcatel-Lucent solution offers an inter-Wireless switch and Inter IP Sub-network mobility.
The OmniPCX Enterprise Communication Server can handle up to 15,000 sets.
In this architecture, communications are coded with the G711 algorithm to favor the voice audio
quality.
Multi-site – WAN – single Communication server architecture
The Alcatel-Lucent VoWLAN solution can be deployed in a multi-site environment, even if the call
processing function (Communication Server) is centralized on one site.
Generally, the bandwidth is limited on the WAN connecting the remote site. This means that the
number of simultaneous communications with other sites must be configured. The central
Communication Server performs the Call Admission Control (CAC). When an OmniTouch 8118/8128
WLAN Handset changes sites, its IP address changes automatically. So, the handset is automatically
located in the corresponding IP domain allowing the Communication Server to control CAC correctly.
User roaming is possible between sites, provided the CAC limits for access points are not reached.
At least one Wireless LAN Switch is mandatory on each site.